C'mon tgrtummy, that is an obvious sales tactic. You are only liable for sales tax in your own state. If, for some reason, another state charges you tax, you must pay the difference to California if you paid less than what California charges for your region of the state. AND I believe California has to refund you if you paid more to another state than what California requires.
I suggest you do some research on your own for some of these state tax and DMV questions because most of them can be answered at the DMV web site that MarvS gave you on your last post. Remember, knowledge is power, and in this case it holds especially true. You should go to the edmunds website as well for other questions concerning base price, luxury tax and gas guzzler tax. The more you know, the less they can screw with you.